After a virus, unable to access a computer's shared folders over the network

I got a trojan the other day that installed a spyware program called Spy Sheriff. There was much cursing and swearing, but after my trusty version of AntiVir as well as a plethora of spyware programs I managed to clean the system of all viruses and spyware as far as I know.

My troubles didn't end for long. Next I got a (fairly common) problem where it says "services.exe has caused an error. Error code 203. Rebooting your computer in 1 minute" or something along those lines. I googled a bit and found that this is often associated with registry keys not matching your actual network setup. Anyhow, I ran a registry cleaner program and THAT problem seemed to go away.

Now however, my network is all messed up.

My setup is as follows: Two home computers plugged into a router that is hooked up to my DSL modem. One computer is called Office, the other is called Bedroom.

The printer is hooked up to Office, and is shared. Both computers have a few shared folders that the other can access.

After I ran the cleaner, Bedroom is no longer visible on the network. Office can't see it in the workgroup, and I can't access any shared folders. I CAN ping both computers using the IP addresses, but each computer can't ping the other using the computer's name. Each computer can ping itself using both its own IP and name.

Here's an interesting thing I just found too; when I open my computer as it should appear on the network by typing \\Bedroom\ into the address bar of windows explorer (using the bedroom computer), I can see the shared folders and printer devices. However, when I double click on any of the folders to open them it says "access denied" with an error message about contacting my administrator.

Office can access its own shared folders fine, so I am fairly confident that the problem is isolated to Bedroom (the one that got the virus before)

So that's ****ing weird. I can't even access the shared folders on Bedroom when typing Bedroom's name into the address bar.

That sounds like a headache and a half. If the infection was bad you can't be sure what was done to your computer so I'd backup all my information and perform a clean install of my system, also, even if you fix this problem what other problems will there be on after you fix that one?

Can you post a hijackthis log? Maybe you're still infected but don't know it. We'd probably have to call over a security expert but go ahead and post it first, perhaps there'll be something obvious that you can try. You can download hijackthis from here --> http://www.bleepingcomputer.com/files/hijackthis.php . You can read a tutorial on how to post a hijackthis log here --> http://www.bleepingcomputer.com/tutorials/tutorial94.html .
Remember to place the hijackthis executable in its own folder and to place the folder in a non-temporary location like the root (C:\hijackthis) or in C:\program files\hijackthis like the tutorial recommends. This location is to prevent your backups from being accidentally deleted.

I see at least one entry for a worm but that likely means that the file has been removed but the entry remains so you may be ok. I'll see if I can get a security expert over here. You may want to try too.